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TRUSTED BY DENVER, CO HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon380
    Verified insulation services reviews

Top-Rated Insulation pros in Denver - Updated Nov 2026

Avatar for Innovative Solutions Insulation & Drywall, LLC
Innovative Solutions Insulation & Drywall, LLC
4.7(
105
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Denver, CO and surrounding areas

Approved

In business since 2005

Free estimates

Customers say: Quick response

"Since we had squirrel damage on some electrical wiring in the attic, we hired them to first remove the old insulation so the electrician could more easily do the wiring repair. Cost more to remove the old stuff (old and worthless), but it saved $500 on the electrical work bill. After the electrical work was done, they came back and filled in the attic with R49. The guys doing the the removal and installation work were great, and it went quickly and efficiently. Terry was a good guy to work with for estimates and scheduling, and Brian for invoicing. Overall, we are very happy. Wish that work with all home contractors went this well."
www.isid.us
Response time3 hrs
Recommended by100%of homeowners
Montgomery Insulation, Inc.
4.7(
61
)
Blown-In Insulation - Install or Upgrade

Serving Denver, CO and surrounding areas

Approved

In business since 1997

Free estimates

Small jobs welcome

"It's hard to know about the quality of the work since I wasn't up in the attic with him. Would have been nice to have before and after pictures so I could see the amount of new insulation blown in. I just have to take Jasons' word for it. His cost was about 30% lower than the competition I got bids from. Overall satisfied."
Vaulted Ceiling Insulation
Response time12 hrs
Response rate91%
23 neighbors recently requested a quote
Bestway Insulation, LLC
4.1(
286
)
Blown-In Insulation - Install or Upgrade

Serving Denver, CO and surrounding areas

Approved

In business since 1976

Free estimates

Emergency services offered

Home Pro of the Year in 2010 (Service Magic)Home Performance Contractor of the Year for the last 8 out of 10 years. We are a company that specializes in re-insulating existing homes by using blown-in insulation and getting huge reductions on our customers energy bills by Air Sealing and compressing fiberglass or rockwool in the walls and Dense packing it tight.Where most companies are happy getting 10%energy reductions on their clients homes, we want 50% or higher. Our family has owned and operated Bestway Insulation, LLC, in Colorado since 1976. Born & raised CO. Top Rebate producer for air sealing in 2009 - 2021. Home Performance with energy star Contractor of the year 21 out of 23 Years starting with NREL when they were doing it in 1996. I want huge results for my clients.

Response time1 day
20 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for Empower Insulation, LLC
Empower Insulation, LLC
5.0(
11
)
Spray Foam Insulation - InstallBlown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Denver, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Small jobs welcome

"I had an excellent experience with Empower Insulation from start to finish. They took the time to explain all of my options, answered every question I had, and helped me choose the best insulation solution for my home. I highly recommend Empower Insulation to anyone looking for top-notch insulation services. Great company, great service, and even better results!"
Custom Home New Build
Custom Home
Custom Home
Insulation Attic
Insulation Removal

+11

Response time1 day
4 neighbors recently requested a quote
Avatar for ATTICPRO INSULATION LLC
ATTICPRO INSULATION LLC
5.0(
8
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Denver, CO and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"I had a great experience with this insulation company. The crew showed up on time, were very professional, and did a really great job. They were friendly, worked efficiently, and left everything clean when they were finished. I’m very happy with the quality of the work and would definitely recommend them to anyone looking for insulation."
Attic Insulation
Attic Insulation
Attic Insulation
Attic Insulation
Attic Insulation

+13

36 neighbors recently requested a quote
Avatar for Insulation Nation
Insulation Nation
4.8(
10
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Denver, CO and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"We were very impressed with Insulation Nation’s professionalism, promptness, cleanliness and the incredible results we have experienced from the job they did in our attic. They made the process very easy at a reasonable price and we would strongly recommend them!"
Filled all exterior walls with dense pack cellulose insulation
Installed radiant barrier throughout entire attic above garage.
Additional Photos
Additional Photos
Additional Photos

+1

2 neighbors recently requested a quote
Recommended by80%of homeowners
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Showing 1-10 of 229
Insulation FAQs, answered by experts

In Denver, most insulation service projects take between several hours and a few days, depending on the area and method. Attic insulation is often completed in one day, while wall or crawl space projects may require up to three days. Allow extra time for permit approvals and inspections, especially during winter when weather can cause delays. Scheduling in milder months helps ensure a smoother, faster process.

Helpful?

Before starting an insulation service project in Denver, carefully plan by confirming all necessary permits are in place and scheduling a home energy audit to pinpoint problem areas. Order materials early to avoid supply chain issues, and check weather forecasts since Denver’s spring and fall are best for insulation work. Ensure HVAC access, coordinate with utility providers, and inspect for existing moisture or pest problems that could complicate installation.

Helpful?

Insulation in Denver benefits from yearly inspections, especially after snowmelt or heavy rain, to check for settling, moisture, or pest issues. Watch for air leaks, ice dams, or UV damage in exposed areas. Seasonal attic ventilation checks and monitoring for mold or mildew are important. Professional R-value testing and occasional insulation top-ups every 5–10 years help maintain energy efficiency and comfort in Denver’s changing climate.

Helpful?

When comparing insulation service quotes in Denver, be cautious of unusually low prices, vague or missing details, or pressure for quick decisions. Reliable contractors should discuss Denver’s specific R-value needs, air sealing, and climate-related concerns. Avoid professionals who lack local references, clear warranty terms, or proof of insurance. Always compare multiple quotes and ensure each provider understands Denver’s unique insulation challenges and requirements.

Helpful?

Completing insulation service projects in Denver can significantly boost your home’s value and attract buyers who prioritize energy efficiency. Enhanced insulation improves comfort and lowers utility bills, which are highly valued in Denver’s variable climate. Keep records of R-value improvements, energy audit results, and any warranties, as these details appeal to eco-conscious buyers and help demonstrate long-term savings and improved home performance.

Helpful?

The Denver, CO homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.